Denture-fixing attachment having freely adjustable angle and position

Abstract

Disclosed is a denture-fixing attachment freely adjustable in angle and position and including a rotation guide member installed at the center of the denture-fixing attachment, having a lower portion to be inserted into a fixture groove of a fixture, a thread being formed at a rim of the fixture groove, so that the rotation guide member may be coupled with the fixture having the fixture groove, a rotation guide member angle restriction cover positioned on the rotation guide member and provided therein with a through hole, and a ball joint having a ball joint lower portion placed in a rotation guide member inside provided in a ball joint angle restriction cover.

The invention claimed is: 
     
       1. A denture-fixing attachment freely adjustable in angle and position, the denture-fixing attachment comprising:
 a fixture including a fixture groove; 
 a rotation guide member installed at a center of the denture-fixing attachment, the rotation guide member comprising a lower portion extending downward to be inserted into and coupled with the fixture groove of the fixture, a lateral side positioned on the lower portion thereof, and an upper groove recessed in a concave half-moon shape positioned at an upper portion of the rotation guide member; 
 a ball joint angle restriction cover positioned on the rotation guide member and having a through hole vertically formed through an inner part of the ball joint angle restriction cover; and 
 a ball joint disposed to couple with the upper groove of the rotation guide member and positioned inside the ball joint angle restriction cover, 
 wherein the ball joint has a shape of a dumbbell and comprises: 
 a ball joint lower portion for coupling with the upper groove of the rotation guide member, the ball joint lower portion having a shape of a ball; 
 a ball joint intermediate portion installed at an upper portion of the ball joint lower portion, the ball joint intermediate portion having a shape of a cylinder and having a diameter smaller than a diameter of the ball joint lower portion; and 
 a ball joint upper portion installed at an upper portion of the ball joint intermediate portion, the ball joint upper portion having a shape of a ball and having a diameter greater than the diameter of the ball joint intermediate portion and smaller than the diameter of the ball joint lower portion. 
 
     
     
       2. The denture-fixing attachment of  claim 1 , wherein the rotation guide member comprises a thread disposed at the lateral side thereof. 
     
     
       3. A denture-fixing attachment freely adjustable in angle and position, the denture-fixing attachment comprising:
 a fixture including a fixture groove; 
 a rotation guide member installed at a center of the denture-fixing attachment, the rotation guide member comprising a lower portion extending downward to be inserted into and coupled with the fixture groove of the fixture, a lateral side positioned on the lower portion thereof, and an upper groove recessed in a concave half-moon shape positioned at an upper portion of the rotation guide member; 
 a ball joint angle restriction cover positioned on the rotation guide member and having a through hole vertically formed through an inner part of the ball joint angle restriction cover; and 
 a ball joint disposed to couple with the upper groove of the rotation guide member and positioned inside the ball joint angle restriction cover, 
 wherein the ball joint has a shape of a dumbbell and comprises: 
 a ball joint lower portion for coupling with the upper groove of the rotation guide member, the ball joint lower portion having a spherical sector shape with a cone angle of less than 180 degrees; 
 a ball joint intermediate portion installed at an upper portion of the ball joint lower portion, the ball joint intermediate portion having a shape of a cylinder and having a diameter smaller than a diameter of the ball joint lower portion; and 
 a ball joint upper portion installed at an upper portion of the ball joint intermediate portion, the ball joint upper portion having a shape of a ball and having a diameter greater than the diameter of the ball joint intermediate portion and smaller than the diameter of the ball joint lower portion. 
 
     
     
       4. A denture-fixing attachment freely adjustable in angle and position, the denture-fixing attachment comprising:
 a fixture including a fixture groove; 
 a rotation guide member installed at a center of the denture-fixing attachment, the rotation guide member comprising a lower portion extending downward to be inserted into and coupled with the fixture groove of the fixture, a lateral side positioned on the lower portion thereof, and an upper protrusion protruding in a convex half-moon shape positioned at an upper portion of the rotation guide member; 
 a ball joint angle restriction cover positioned on the rotation guide member and having a through hole vertically formed through an inner part of the ball joint angle restriction cover; and 
 a ball joint disposed to couple with the upper protrusion of the rotation guide member and positioned inside the ball joint angle restriction cover, 
 wherein the ball joint comprises a ball joint lower portion having a lower portion for coupling with the upper protrusion of the rotation guide member, the ball joint lower portion having a concave recessed groove for receiving the upper protrusion of the rotation guide member. 
 
     
     
       5. The denture-fixing attachment of  claim 4 , wherein the ball joint further comprises:
 a ball joint intermediate portion installed at an upper portion of the ball joint lower portion, the ball joint intermediate portion having a shape of a cylinder and a diameter smaller than a diameter of the ball joint lower portion; and 
 a ball joint upper portion installed at an upper portion of the ball joint intermediate portion, the ball joint upper portion having a shape of a ball and having a diameter greater than the diameter of the ball joint intermediate portion and smaller than the diameter of the ball joint lower portion.